Jodi Keenan was the wife of Wes Keenan.
She was in the U.S. Army Explosive Ordnance Disposal unit, but she was discharged for behavior problems. She received word that her husband died in a helicopter crash, but refused to believe it.
She detonated a small explosion that injured Lionel and trapped Lex in the tunnel with her. She demanded to know what LuthorCorp was doing to her husband and instructed Lex to call Wes and let her talk to him, or she would blow the entire cave system up in twenty minutes. Lex finally admitted that Wes was dead, but Jodi was still unnerved and Lex managed to get her gun away from her.
It went off and she was injured. Lex told her they could still get out of the cave alive, but she stated that the bomb was pre-programmed. Just before she succumbed to her injury, she set off another smaller explosion, killing herself.